Current & Voltage Course

Lesson 2 of 16: What is Current

Move step by step through the course and keep track of where you are.

SIM-03

What is Current?

Current is the rate of electric charge flow through a closed circuit. Increase voltage to raise current, or increase resistance to reduce it.

Voltage

12.0 V

Resistance

6.0 Ohm

Current

2.00 A

Core Idea

Voltage pushes charge. Resistance slows charge flow. Current tells us how much charge passes through the circuit each second.

Ohm's Law: I = V / R
FLOW-01ACTIVE MODULE

Electricity Flow Simulation

Play, pause, or reset the electron flow.

Current = Charge FlowVoltage push and resistance set the current • I = 2.00A • Level: MEDIUM+12.0V12RESISTOR 6.0ΩakLEDVoltage PushCurrent Flow →Current Flow Strength: 40%

Current Level

MEDIUM

40% current strength

Formula

I = V / R

12.0 / 6.0 = 2.00 A

Current Effect

Steady Flow

Higher voltage raises current. Higher resistance lowers it.

LEARN-01

Beginner Explanation

Simple meaning for absolute beginners.

SYSTEM ACTIVE

Current

Current means how fast electric charge moves through a wire or circuit.

Unit

Current is measured in ampere (A). We use the symbol I in formulas.

Closed Path

Current flows only when the circuit path is complete from one terminal to the other.